macrodyne,
inc.

Integrated
Recording Units for Transient Fault and Long Term Disturbance Events

Model 1692C Integrated Recording Unit

The Model 1692C Integrated Recording Unit records both transient fault and
long term disturbance events with instrument class accuracy, adding a new
dimension to power system recording instruments.

Performance

The Model 1692C features a 16-bit A/D converter per channel and
advanced digital filtering techniques to provide outstanding recording
fidelity. An adaptive anti-aliasing filter rejects out-of-band signals to
further ensure a high degree of accuracy. All input channels are DC
coupled so that transducers may be monitored and offset currents properly
recorded.

Operation

System functions, including virtually all triggering, storage, control and
communications are directed by the instrument's Pentium processor, providing
optimum flexibility. This software control allows the user to take full
advantage of the powerful facilities. An external GPS clock may be used to
implement synchronous sampling with the degree of accuracy necessary for phasor
computation and recording for use in state estimation an protection and control
functions. In addition the data can be used in dynamic stability
monitoring applications, load modeling and system model verification.

Configuration

The Model 1692C IRU has a standard configuration of 16 analog input channels
and 32 digital input channels in a single compact cabinet. Other optional
configurations are available upon customer request. For less demanding
applications a 12-bit input channel with reduced filtering is provided.